JPH1119042A - Ophthalmic photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an ophthalmic photographing device of which the operatability is improved, and at the same time, which has property for general purpose. SOLUTION: A photographer first performs an alignment with an eye to be inspected through a finder 26, and photographes the image of the eye to be inspected by an electronic image picking-up means 27 by a light emitting of a xenon tube in a main body part 24. The fundus oculi image of the eye to be inspected is formed on the electronic image picking-up means 27, and then, is converted into an electric signal, and then, is A/D-converted, and is recorded in a recording medium in the electronic image picking-up means 27. Thus, the photographer photographs images of eyes to be inspected one after another, and records them on the recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic photographing apparatus used in mass examinations and ophthalmic clinics.

[0002]

2. Description of the Related Art Conventionally, an electronic image is photographed using a CCD camera or the like for recording a fundus image or the like, and the photographed image is recorded on an external recording device and displayed on a display device such as an external television monitor. ing.

FIG. 4 is a view showing the configuration of an ophthalmologic photographing apparatus comprising a first conventional example of a fundus camera. On a base 1, a movable part 2 movable horizontally with respect to the base 1 is mounted. , Movable part 2
Is provided with a fundus camera body 3 and an operation stick 4. The output of the imaging means such as the CCD camera 5 of the fundus camera body 3 is connected to an external recording device 7 and a television monitor 8 via a cable 6.

[0004] First, in order to photograph the eye to be examined, the operation stick 4 is used.
Aligns the fundus camera body 3 with the eye to be examined. After this alignment is completed, a xenon tube (not shown) built in the fundus camera body 3 emits light to illuminate the fundus of the eye to be examined, so that a fundus image is formed on the CCD camera 5,
The video is captured by the external recording device 7 via the cable 6, and the captured image is displayed on the television monitor 8.
In addition, generally, the fundus camera body 3 can rotate around a substantially pupil position of the subject's eye as shown in FIG.
A plurality of images are taken for the same subject's eye while changing the composition.

FIG. 6 shows a front view of a second conventional example of a fundus camera. A movable section 11 is mounted on a base 10.
The movable portion 11 is provided with a fundus camera body 12 and an image display means 13 for displaying a natural observation image and a photographed image at the time of alignment. The output of the electronic imaging means 14 such as a CCD camera in the fundus camera body 12 is It is connected to the image display means 13 via the connection cable 15. In this fundus camera, a color monitor is used to display images in color during color photography.

[0006]

However, in the above-mentioned first conventional example, since the external recording device 7 for recording recorded images and the television camera 8 are provided outside the fundus camera main body 3, the CCD is not used. When the wiring from the camera 5 becomes complicated, these cables 6 disturb the alignment and the delicate alignment with the eye to be examined cannot be performed. When the fundus camera body 3 is moved or rotated more frequently, the cable 6 is cut. There is a risk of doing so.

In the second conventional example, the examiner must change his or her posture every time the examiner checks an image. If a color monitor is used for the image display means 13 mounted on the fundus camera body 12, the electronic monitor will For silver halide photography that does not shoot, the cost will increase, and a fundus camera dedicated to electronic photography will be forced,
The versatility of the electronic imaging means 14 is lost.

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide a versatile ophthalmologic imaging apparatus with improved operability.

[0009]

An ophthalmologic photographing apparatus according to the present invention for achieving the above object has an illumination optical system for illuminating an eye to be inspected, and an imaging optical system for photographing an image of the eye to be illuminated by the illumination optical system. An ophthalmologic photographing apparatus comprising: a detachable electronic image pickup unit for picking up an eye image illuminated by the illumination optical system via the photographing optical system, the electronic image pickup unit displaying the picked-up image And an image display unit that performs

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a side view of an ophthalmologic photographing apparatus which is a fundus camera of the first embodiment, FIG. 2 is a front view as viewed from the examiner side, and a base 20 has a forehead rest and a chin rest on which the face of the examinee is placed. A table is installed, and a movable table 2 is placed on the base 20.
2 is mounted so as to be movable horizontally. An operation stick 23 is provided on the movable base 22, and alignment with a subject is performed by the operation stick 23. A main body 24 having an optical system of the ophthalmologic photographing apparatus is mounted on the movable base 22, and a panning and tilting table 25 for rotating the main body 24 is attached to a side surface thereof. Further, a finder 26 for observing the eye to be inspected, a detachable electronic imaging means 27, and an image display means 28 for displaying an image of the eye to be inspected taken by the electronic imaging means 27 are arranged in the main body 24.

In such a configuration, the photographer first performs alignment with the subject's eye through the viewfinder 26,
The xenon tube (not shown) in the main body 24 emits light, and the electronic imaging unit 27 captures a fundus image of the subject's eye. The fundus image is converted into an electric signal after being formed on the electronic imaging unit 27, then A / D converted, and displayed on the image display unit 28 provided in the electronic imaging unit 27. It is recorded on a recording medium. In this way, the photographer successively photographs and records the fundus images of the subject's eye. Here, since the electronic imaging unit 27 is detachable, it can be replaced with a 35 mm, instant film, or the like, and silver halide photography or another electronic imaging unit can be used, depending on the photographer's preference.

FIG. 3 shows a front view of an ophthalmologic photographing apparatus according to a second embodiment. A base 30 is provided with a forehead rest and a chin rest 31 for placing the face of a subject. On the upper part, a movable table 32 is mounted so as to be movable horizontally. Image display means 3 such as a CRT or a liquid crystal display is provided on the movable base 32.
3. The main body 34 of the ophthalmologic photographing apparatus having a built-in optical system is mounted thereon, and the main body 34 has detachable electronic imaging means 35,
An image display means 36 for displaying an eye image of the subject captured by the electronic imaging means 35 is provided. Note that the electronic imaging means 35 can be sequentially replaced according to the photographer's preference, as in the first embodiment.

In general, this type of fundus camera illuminates the fundus of the subject's eye with infrared light,
The subject's eye image is observed with a CD camera. The photographer performs alignment with the subject's eye through the image display means 33, and captures a fundus image of the subject's eye with the electronic imaging means 35 by emitting light from a xenon tube (not shown) in the main body 34. The fundus image is formed into an electric signal after being formed by the electronic imaging unit 35, and is then A / D converted and displayed on the image display unit 36 provided in the electronic imaging unit 35. It is recorded on a recording medium. In this way, the photographer successively photographs and records the fundus image of the eye to be examined.

In this case, the main bodies 24 and 34 are
Since it is placed on the movable bases 2 and 32, the movement follows the movable bases 22 and 32, and the visibility of the operator is good.

In this embodiment, two types of image display means 33 and 36 for infrared observation and for a recorded image are shown. However, the image display means for the recorded image is displayed on the image display means for observation of the subject's eye. Then, the number of image display units may be one.

[0016]

As described above, in the ophthalmologic photographing apparatus according to the present invention, the number of cables is reduced and the operability is improved by providing the detachable electronic image pickup means with the image display means.

[Brief description of the drawings]

FIG. 1 is a side view of an ophthalmologic photographing apparatus according to a first embodiment.

FIG. 2 is a front view.

FIG. 3 is a front view of an ophthalmologic photographing apparatus according to a second embodiment.

FIG. 4 is a side view of a conventional ophthalmologic photographing apparatus.

FIG. 5 is a plan view.

FIG. 6 is a front view.

[Explanation of symbols]

 23 operation stick 24, 34 main body 26 finder 27, 35 electronic imaging means 28, 33, 36 image display means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Takashi Masuda, Inventor 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Kazuhiro Matsumoto 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inside (72) Inventor Kenichi Kashiwagi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Takeshi Kitamura 3-30-2, Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (2)

[Claims] 1. An ophthalmologic photographing apparatus comprising: an illumination optical system for illuminating an eye to be inspected; and a photographing optical system for photographing an image of the eye to be inspected illuminated by the illumination optical system. An ophthalmologic imaging apparatus, comprising: detachable electronic imaging means for imaging the image through the imaging optical system; and the electronic imaging means includes image display means for displaying a captured image. 2. The ophthalmologic photographing apparatus according to claim 1, wherein said electronic imaging means has an image recording means.